Brimming with twisted humor and tales of terror, this year’s collection of midnight shorts is worth staying up for. Nick Moran stars in “82” as a postman who’s been casing his neighborhood, but his quiet suburb isn’t all it seems; a twisted history (and dystopian future) for the panda bear is envisioned in the animated “Pandas;” an elementary school class plays an April Fool’s joke that goes horribly, horribly wrong in “Fool’s Day;” and a quaint 1950s dentist hides a horrible secret from his patients in “The Root of the Problem.”